An analysis of the political and economic conditions which precipitated the Protestant School Board of Greater Montreal's open policy toward immigrants between 1864 and 1930. The author puts forward the theory that after the adoption of the British North America Act 1867, which established the minority status of Anglophone Protestants in Quebec, Montreal's Protestant school board commissioners sought to integrate all non-Catholic groups into their schools and to anglicize most of these new Montrealers in order to reduce the gap between the number of Francophones and Anglophones in the city. In order to fulfill this undertaking, the author argues, the Protestant school board had to fight hard to obtain from the provincial government the legal responsibility to teach Jewish children and a new sharing of the school tax allowing the Anglophone Protestant board to take charge not only of these children but also those of all other denominations.